title: Comparison of the metabolism of ammonia and molecular nitrogen in photosynthesizing bacteria.
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D001419:Bacteria; D006090:Gram-Negative Bacteria; D009584:Nitrogen / Q000378:metabolism*
chemical_list: D000641:Ammonia; D009584:Nitrogen
keywords: AMMONIA/metabolism; BACTERIA; NITROGEN/metabolism